My vote goes to the incredibly annoying creature that keeps popping up all over the place, and as soon as you knock it back down it just keeps popping right back up again, apparently without ever giving up. You know, the one that also resembles a mole.

Effective policing requires to know when backing down is in the best interest of public safety. By all accounts, the culture of the Ferguson Police was ignorant of that fact, and instead treated Cartman of South Park as a role model for how to be a police officer.